As OK! was the first to report recently, Jennifer Aniston made a brief return to sitcom stardom when she filmed a guest role on the NBC hit 30 Rock. And now, the former Friends star is talking about her experience back on the small screen.

"Where do I begin? I just had the time of my life," she told reporters at the Toronto International Film Festival, where she’s promoting her upcoming film Management. "The cast welcomed me in with open arms, and it was so good."

And Jen had nothing but nice things to say about her co-stars on the show, whom she called, "Stellar!… Alec Baldwin, Tina Fey, Jane Krawkowski… what a great group of people," she told ET Canada. "Unbelievable!

Meanwhile, Jen’s director in Management, Stephen Belber, took his time out to gush to OK! about how great it was to work with the actress.

"She lives with her heart on her sleeves, she lives fully and she’s not afraid to hide it," explained Stephen. "She doesn’t flaunt it in any sense. People follow her life, and she’s not a jerk. She could be a mean, bitter person as a result of all the press she gets – or the hounding — she gets, and she just never, ever shows a bitterness at all. That alone is huge, I think."